34 G. O. Sars. 



Description of the male. 



(Pl. 5.) 



The shell of fully grown male specimens does not exceed 

 in size that of the female, and also appears of a very similar 

 shape. On a closer comparison, it is found, however, when seen 

 from the side (fig. 1), to be a Httle narrower, with the posterior 

 extremity somewhat more produced and the dorsal corner less 

 distinct. Seen from above (fig. 2), it appears fully as tumid 

 as in the female, and of a very similar form. The lines of 

 growth are as in the female very numerous and rather regular, 

 amounting to 20 or 24 in all. 



The enclosed animal (see fig. 3) at once distinguishes it- 

 self from that of the female by the structure of the 2 anterior 

 pairs of legs; but otherwise does not appear very different. 



The head exhibits a securiform shape like that in the 

 female, differing only in the less acute rostral projection, and 

 in the less abruptly bent fornix. 



The antennulæ (fig. 4) are comparatively more fully 

 developed, and are divided into a greater number of articula- 

 tions, 16 in all, besides the short basal joint. 



The antennæ and oral parts do not differ from those parts 

 in the female 



The legs are present in the same number as in the 

 female. As in the male of the genus Eulhnadia, both of the 

 2 anterior pairs are prehensile and built in a very similar 

 manner, though the hand appears a little stronger in the 1st 

 (fig. 6) than in the 2nd pair (fig. 7). In both pairs the hand 

 is scarcely broader than it is long, and is wanting in the triangular 

 projection on the inner side, found in the male of Eulimadia. 

 The thumb is rather massive, and densely clothed with curved 

 spines on its obtusely rounded extremity; it carries inside a 

 deflexed setiferous lobe similar to that found in Eulimadia. 

 The claw is very strong, and in its form not unlike that of 



